Nut and bolt lock



Sept. 18 1923. 11,468,126

P. MALASKY NUT AND BOLT LOCK Filed April 6, 1922 Emmi INVENTOR Elva/0M by B Q Patented Sept. 18, 1923.

.ru r tries.

1 rerun MALASKY, or 11mm, rrrcnrean, Assrcnos or ONE-HALF r LAZAR SAWUL- r GHIK, o1" DETROIT, MICHIGAN.

NUT AND Em Loon.

' Application filed April 5,

T 0 all w from it in ag concern Be it known that 1, PETER MALASKY, a citizen of Russia, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Nut and Bolt Locks, of which the following is aspecification.

i This invention relates to improvements in devices for locking, screw-threaded elements, as nuts on their bolts, in a positive manner and has for its object the provision of means carried by the nut cooperative wi h means formed in'tlie bolt.

To this purpose the improvements comprise features hereinafter described in their preferred embodiments and illustrated in the accompanying drawing, forming a material part of this disclosure, and inwhichz- Figure 1 is a top plan View of a nut and boltarranged in accordancewith the in vention.

Figure 2 is a side elevational view of thesame, the nut and allied elements being in section. I r

Figure 3 is a transverse section on line 3- 3 of Figure 2.

Figure 4 is a longitudinal sectional view of the nut and part of the bolt, showing a modification in construction.

Figure 5 is a bottom plan view of same.

Figure 6 is an enlarged fragmentary view, showing a section of the nut and detent, drawn toan enlarged scale.

In the drawing, the numeral 10 designates the body of an ordinary commercial bolt having a head 11 and a screw threaded portion 12, but it is to be understood that any the screw-threaded part may be substituted for y the bolt illustrated, the same being pro vided with a shallow longitudinal slot 13.,

extending slightly beyond the end of the screw threads into the shank.

Engageable with the bolt is a nut 14, here shown of the size and proportion of a common standard hexagonal nut and, as indicated in Figures 2, 3 and 6, contains an annularly chambered recess 15 in itsbase, in whichis received a fiat ring 16.

Said ring is rotatably secured in the reccss by a spring wire 17 set in corresponding annular grooves formed partially in the inner wall of the recess 15 and periphery of the ring 16 as indicated.

Extending integrally from the inner cir- 1922. Serial No. 549,989.

cumference ofthe ring 16 is a projection 18 adapted to engage the slot 13 in the manner of a key and in the upper surface of the ring are a plurality of evenly s )aced shallow openings 19 facing the bottom of the recess 15. Engageable in any of these openings is a detent plunger 20 slidable in an opening 21 drilled lengthwise thru the nut, normally pressed down by a spring 22 encircling the stem 28, abutting the plunger and partially closed end of the opening. The plunger stem continues through and pivotally engages midway in the length of lever 2d, normally seated in a recess 25 formed transversely in the top of the nut beyond which the point of the lever slightly extends, the lever being flush or level with the upper surface of the nut when ex ended horizontally.

In the modification, shown in Figures 4 and 5, in place of the ring 15 being inserted in the nut, a. washer 26 is used,the same having openings 27, for the plunger 20 and a key 28 engaging the slot 13 of the bolt.

In operation, the nut is screwed upon the bolt in the usual manner, the key 18 or 28 engaging the slot and hence being held from-rotation and the lever being raised, withdraws the plunger from the openings 19 or 27. 7

From the foregoing it will be seen that simple devices for the purpose have been de scribed and illustrated in the preferred form of their embodiments, but it is understood that minor changes in construction may be made without departing from the spirit of suited to engage the mentioned slot, said ring containing a plurality of uniformly spaced openings in its upper surface, said nut having an opening parallel to its threaded opening registerable with any of the other openings, resilient means for retaining said ring within the nut, a spring impelled plunger movable in the opening of said nut and selectively engageable in the openings of'said ring, a lever operable in the upper portion of said nut, said lever being normally level. with its upper surface,

and pivotal connections between said lever and said plunger.

2. A nut lock comprising in combination 71th a slotted screw, a nut fitted to said screw, said nut having a radial recessiin its top, a lever in the mentioned recess level with the upper surface thereo'l, a spring 1111- V pelled plunger 'Inovable longitudinally in locking ring in the nientioned'recesses, saidwasher having spaced openings individually receptive of sald plunger, and a PIOJBCUOII formed on the inner circumference of said washer engageable in the slot of said screw. 20 V i In Witness whereof I aflix my signature. 7

" V PETER 

